Setting up mechanical linkage of levers
I've been at it over a month. I have a 99% solution.
The pictures show what I have done in Forward and Backward gear.
The solution isn't perfect because the travel between gears is on a circular route. I posted a video on Youtube. The first 30 seconds are still photos and then the action starts. If anyone has an idea how to make a straight route let me know. Thanks. Have a great day. 
TOM

https://youtu.be/L5k6kLqcca4